Precision CNC machined from 7075/T6 aluminum for a high strength & lightweight platform.; Hardcoat anodized finish for abrasion and corrosion resistance.; Rings feature stainless steel hardware for "Element Proof" protection.; Standard 1/2" nut attachments to ensure secure and consistent clamping force.; Fits Picatinny style mounts and are NATO-STANAG compatible.; Available for 1" and 30mm tube sizes; in Low, Medium, and High; For maximum compatibility with most scope/firearm combinations.